基于有限元强度折减法的边坡稳定性分析
摘要:运用有限元强度折减法进行边坡的稳定性分析,同时运用简化bishop法对比结果,发现运用强度折减法进行边坡稳定性分析时,伴随着折减系数的增大,边坡的坡顶水平位移最初缓慢增大,但当折减系数接近边坡的安全系数,坡顶水平位移突然急剧减小,边坡的塑性区也伴随着折减系数的增大,从无到有,直到基本贯通。运用简化bishop法计算的结果和强度折减法的结果对比后得知,两者计算得到破裂面基本一致,但是简化bishop法得到的安全系数偏于保守。
Abstract:In this paper, apply "FEM strength reduction" to carry out slope stability analysis, at the same time, apply "Bishop's simplified method" to compare the result. Follow the reduction factor increases, the maximum horizontal displacement that at the top of slope was increased slowly in the initial stage, but when the reduction factor close to the safety factor, the maximum horizontal displacement was reduced quickly. And, follow the reduction factor increases, the plastic zones from scratch, until through. For comparing, I find the damage surface that calculated by the two ways,are basically consistent, but the safety factors are conservative by the "Bishop's simplified method".
中文标题：
基于有限元强度折减法的边坡稳定性分析
The Stability Analysis of Slope Based on FEM strength reduction
作者：
李鹏飞1,谌文武1,2
Li Pengfei1,Chen Wenwu1,2
作者简介:李鹏飞,1985年生,男,汉族,内蒙古赤峰人,硕士,主要从事地质工程研究工作。E-mail:flip2008@lzu.cn
通讯地址：
1. 兰州大学土木工程与力学学院, 甘肃兰州 730000; 2. 西部灾害与环境力学教育部重点实验室, 甘肃兰州 730000
1.CollegeofCivilEngineeringandMechanics,LanzhouUniversity,Lanzhou730000,Gansu,China; 2.KeyLaboratoryofWesternChina,EnvironmentalSystems,MinistryofEducation,Lanzhou730000,Gansu,China
中图分类号:TU413.62
doi:10.3969/j.issn.1007-2993.2009.05.002
出版物：岩土工程技术
收稿日期:2009-06-25
关键词:边坡,数值模拟,毕肖普简化法,有限元强度折减法
Key words:Slope,Numerical Simulation,Bishop’s simplified method,FEM strength reduction
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